Patents - Inventor Surname "Katzenberger"
Katzenberger, Oscar 1902/02/18 -> 693719 - > 
Katzenberger, Oscar 1903/11/24 -> 745064 - > 
Katzenberger, Oscar 1905/05/09 -> 789548 - > 
Katzenberger, Oscar 1906/07/10 -> 825735 - > 
Katzenberger, Oscar 1906/11/06 -> 835437 - > 
Katzenberger, Oscar 1908/02/04 -> 877931 - > 
6 Patents Listed